9.8

CVE-2021-20001: debian debian_linux Incorrect Default Permissions

CVSS: 9.8v3.1CriticalModified
AliasesDEBIAN-CVE-2021-20001DLA-2918-1DSA-5072-1
Published 11-02-2022Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-20001 is a critical (CVSS 9.8) Incorrect Default Permissions vulnerability in debian debian_linux. EPSS estimates a 1.62% chance of exploitation in the next 30 days, higher than 75.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.62%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-02-2022
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

It was discovered, that debian-edu-config, a set of configuration files used for the Debian Edu blend, before 2.12.16 configured insecure permissions for the user web shares (~/public_html), which could result in privilege escalation.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.62%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

0.00 pp

From 1.62% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.62%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian3 products
Skolelinux1 product

2 vendors · 4 products

References

5 links